1. Two or more folds parallel to each other with adjacent folds in opposite directions, resembling the bellows of an accordion. Alternative term: fanfold.
   两个(以上)的平行摺以不同边方式连接，类似手风琴的腔。
2. In the old days, a designer working on an airplane wing handed a bunch of punch cards to the computer operator and waited a week to get back thousands of numbers on fanfold paper.
   那时候，一个设计飞机机翼的工程师会把一大堆穿孔卡片交给电脑操作员，等上一个星期才能拿回来成千上万的数字，而且是写在复写纸上的。

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